# fi vs FM

> English confusable word pair

## The two words

### fi
*noun · IPA /fiː/ · frequency rank #4,603*
The solfeggio syllable used to indicate the sharp of the fourth note of a major scale.

### FM
*noun · frequency rank #6,908*
Initialism of frequency modulation; radio programming that is broadcast in this form.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/vs/fi-vs-fm